Paper-feeding apparatus.



PAPER FEEDING APPARATUS.

APPLIOA'IIO! I'ILED AUG-l. 1905.

i I! I 7 7 V I K IATEN'I orrton.

AX BAUMGARTXER, OF CHICAGO, ILLINOIS.

PAPER-FEEDING APPARATUS.

Specification of Letters Patent.

- Eatented June 26, 1906.

Application filed August 7, 1905. Serial No. 273-079.

To (17/ u-lu-ln if may concern:

Be it known that I, Max BAL'VGARTNER, a

citizen of the I'nited States, residing'at Chicago. 1n thecounty of Cook and State of Illinois have invented certain new and useful Improvements in Paper-Feeding Apparatus; am I do hereby declare the following to be a. full, clear, and exact description of the inventron, such as will enable others skilled in the art to which it appertains to make and use the same. .\Iy invention relates to ap )aratus for feedmg paper sheets into cyl inder printingpresscs. paper-folding machines, &c.; and its object is to rovide pneumatic means of this character \\'1l('ll can be used for conveying sheets of paper of any size, one at a time, from a stack and depositing them upon a table or other structure provided for that urpose.

A still further object is to rovi e mechanism of this character which will positively separate the top sheet from the adjoining sheets of the stack, so as to prevent the displacement of any but the proper sheet during the feeding o eration.

With the )ove and other objects in view the invention consists of a feeding-drum having series of apertures in its face and said drum being mounted upon a tubular shaft adapted to be connected to a suitable airsuction device. The shaft of the drum is resiliently supported within suitable guides, and mechanism is rovided whereby the drum is automatical y depressed or moved downward whenever the a ertures therein assume a position adjacent t to stack of paper to be fed.

The invention also consists of certain other novel features of construction and combination of parts which will be hereinafter more fullydescribcd. and pointed out in the claims.

In the accompanying drawings, I have shown the )referred form of my invention.

In aid rawings, Figure 1 is a side elevation of the feeding ap )aratus, the cylinder and one of the standarr s being partlybroken away and said cylinder being shown in one of its positions during the feedin operation. Fig. 2 is a similar view showing the positions assumed by the )arts just prior to the completion of the feeding'operatlon, and Fig. 3 is a vertical transverse section through the feeding a )paratus.

Relerring to the figures by numerals of reference, 1 is a stack-supporting table or follower adapted to be raised automatically in any suitable manner as the aper sheets are successively removed there rom, and 2 is a. deliverytable. Standards 3 are mounted upon the table at opposite sides of the follower 1 and have slots 4 therein, in which are slidably mounted boxes 5. These boxes are supported by springs 6, located within the slots, and rotatably mounted within the boxes is a tubular shaft 7 having one or more a )crtures S therein. Shaft '7 extends throu i and is secured to the heads of a cylindrical drum 9, which is entirely closed except where series of apertures 10 are formed in the curved face thereof. Each standard has a roller 11 mounted thereon adjacent the 11 )per end of the slot 4, and these rollers are a apted to be simultaneouslycontacted bycams 12,secured to the ends of shaft 7. Arms 13 extend downward from the boxes 5 and are connected at their ends by a blade 14, which lies close to the periphery of the drum and adapted to move upward or downward with the boxes 5. The'shaftis adapted to be connected to any suitable air-exhausting mechanism by means of a tube 15, and it is therefore obvious that the air will be sucked through the series of apertures 10 and into the drum and thence t tube 15. is the drum rotatesin the direction of the arrow in Fig. 1 the cams 12, which rotate therewith, come into contact with the rollers 11 just prior to the time when apertures 10 arrive in position above the stack of paper 16. As these cams continue to rotate they will force the boxes 5 downward and compress springs 6 and will therefore cause the apertured portion of the drum to move downward into close proximity to the upper sheet of the stack 16. 'Ihesuction will cause the said sheet to be drawn upward against the apertured portion of the drum, and as said drum continues to rotate the free end of the u per sheet of )aper will come into contact with end of tablet! and will buckle and will therefore become positively separated from the next succeeding sheet. During the further rotation of the drum the sheet of pa )er will be carried upward into contact witi blade 14, and the end of said sheet will be lifted onto the table 2. The blade 14 serves to close the apertures 10 as they arrive in position thereover, and the trough the apertures 8 to the shaft 7 and sheet is therefore detached from the drum and slid forward onto the table 2, where it can be rasped by any suitable mechanism provided for that purpose. The operation of lifting the sheet ttpon the table is of course I of means rotatable with the drum for impartfacilitated by reason ofthe fact that the drum 9 is raised by the springs 6 as the sheet of paper is carried forward thereby.

it will be seen that this feeding apparatus is a very sitnple and inexpensive construction f and does not require the use of any intricate mechanism for regulating the suction or for s detaching the paper frotn the drum. The drum can he of any size relative to the sheet of paper fed thereby. and the entire apparattts can he easily attached to the various fortns of machines now in use. The fact that the apparatus occupies but a comparatively small space renders the same particularly desirable. i

llaving thus fully described my invention. what I claim as new. and desire to secure by Letters Patent. is

l. A feeding apparatus of the character described comprising a rotatable suction device. a resilient support therefor. and means for tnoving the device vertically during a portion of the rotation thereof to tension the support.

2. The combination with a rotatable suction device. and tneaus for reciprocating the saute vertically duringthe rotation thereof: of a paper-detaching blade adjacent and movable vertically with the suction device.

3. .-\n apparatus of the characterdescribed 1 comprising a rotatable suction device. means for automatically reciprocating said device vertically during the rotation thereof. and a vertically-movable separating-blade adjacent the suction device.

4. In an apparatus of the character described the cotnbination with a resilientlysupported drum having an apertured portion. said drum constituting a suction device: of means rotatable with the drmn for im arting vertical movement thereto in one direction during its rotation and tensioning the support.

5. In an apparatus of the character described tlte combination with a resilientlysupported drmn having an apertnred portion. said drum constituting a suction device:

ing vertical movement thereto during its roapertures.

6. The combination with an apcrtured r0- tatable drum: of a tubular shaft therefor, resiliently-supported bearings for the shaft, a fixed device and means rotatable with the shaft for contacting with said device and automaticallv moving said shaft vertically during its rotation.

T. The combination ith an a ertured rotatable drum. a tubular shaft tierefor and resiliently-supported bearings for the shaft,

of a fixed device. means rotatable with the shaft for contacting with said device and au-' j tric rotatable with the shaft. and means upon one of the standards adapted to be contacted by the eccentric during its rotation.

9. The combination with standards; of a tubular shaft resiliently supported within the standards. an apertured drutnrotatable with the shaft. said shaft communicating with the drum through an aperture therein. aneccentric rotatable with the shaft, means upon one of the standards adapted to be contacted by the eccentric during its rotation. and a paperdetaching device connected to, and movable vertically with. the shaft and drum.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnes es.

MAX BAL'BIGARTX ER.

'itnesses: i

Geo. A. v. )Iassow, -Jonx Haxssnx.

I tation, and a paper-detaching device adjacent and movable vertically with the drum, :said device constttutmg a closure for the 

